Damage and Failure Mechanisms in Machinery

2014 ◽  
pp. 219-250
Author(s):  
Jose Luis Otegui
Keyword(s):  
Failure Mechanisms ◽  
Damage And Failure

Damage and failure mechanisms associated with photoablation of biological tissues

1996 ◽  
Author(s):  
Tarabay Antoun ◽  
Lynn Seaman ◽  
Donald Curran ◽  
Michael Glinsky
Keyword(s):  
Failure Mechanisms ◽  
Biological Tissues ◽  
Damage And Failure

scholarly journals An Advanced Finite Element Modeling for the Failure of Notched Ceramic Matrix Composite With TFP Patch Reinforcement

2021 ◽  
Vol 8 ◽  
Author(s):  
Gang Zhao ◽  
Jianbo Tang ◽  
Jun Wang ◽  
Yunsheng Chen ◽  
Yajie Feng ◽  
...  
Keyword(s):  
Matrix Composite ◽  
Failure Mechanisms ◽  
Damage Model ◽  
Ceramic Matrix Composite ◽  
Mesh Size ◽  
Ceramic Matrix ◽  
Damage And Failure ◽  
Virtual Test ◽  
Modeling Strategy ◽  
Progressive Damage Model

An advanced modeling strategy for notched ceramic matrix composite coupons with patch reinforcement was proposed to investigate the failure mechanisms. This model considered the tailored fiber–placed (TFP) yarn details obtained from the design phase and the embedded element concept which was used to successfully overcome the meshing difficulties. Inter-ply “glue” layers were simulated using the surface-based contact cohesive element method, so the delamination due to interfacial material discontinuity and damage can be well reproduced and analyzed. For composite ply, the energy-based composite progressive damage model that is independent of the mesh size was applied. Virtual test campaign was performed with a variety of geometrical and material parameters, and the damage and failure mechanisms based on the stress analysis can be revealed to support the design optimization of patch reinforcement.

scholarly journals Failure investigation as a route to improving integrity of titanium alloys in service

2020 ◽  
Vol 321 ◽  
pp. 04007
Author(s):  
C. Collins ◽  
F.F. Dear ◽  
D. Rugg ◽  
D. Dye
Keyword(s):  
Titanium Alloy ◽  
Titanium Alloys ◽  
Feedback Loop ◽  
State Of The Art ◽  
Failure Mechanisms ◽  
Damage And Failure ◽  
Root Cause ◽  
Aerospace Applications ◽  
Failure Investigation ◽  
Comprehensive Framework

Increasing demands on titanium alloys in aerospace applications have driven a push towards deeper understanding of their behaviour in service. This extends from component performance during planned operation to damage mechanisms and how parts may ultimately fail. Investigation of damage and failure requires a comprehensive framework of techniques in order to identify a root cause, and further the understanding of failure mechanisms. It is crucial to defining and improving component lifetimes via a design optimisation feedback loop. This paper presents an overview of the techniques used in state-of-the-art industrial titanium alloy failure investigation, highlighting the inherent reciprocal links to frontline research and the need for constant innovation.

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